515074394 has 8 divisors (see below), whose sum is σ = 799253460. Its totient is φ = 248656576.

The previous prime is 515074387. The next prime is 515074403. The reversal of 515074394 is 493470515.

It can be written as a sum of positive squares in 2 ways, for example, as 512433769 + 2640625 = 22637^2 + 1625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4440239 + ... + 4440354.

Almost surely, 2^515074394 is an apocalyptic number.

515074394 is a deficient number, since it is larger than the sum of its proper divisors (284179066).

515074394 is a wasteful number, since it uses less digits than its factorization.

515074394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880624.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 515074394 is about 22695.2504722905. The cubic root of 515074394 is about 801.5980525346.

The spelling of 515074394 in words is "five hundred fifteen million, seventy-four thousand, three hundred ninety-four".